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1. Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey

   higher than average catch of night trawls. The average thickness of krill swarm in the daytime was ... Abstract:  Antarctic krill (Euphausia superba Dana) is a key species in the Southern Ocean ... fisheries. In this paper, using the multi-frequency acoustic data and the fishery data, the relationship ... between the acoustic scattering coefficient of krill swarms and catch, catch per unit effort (CPUE), catch ...

   Meeting Document : WG-EMM-17/44 : Author(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu

2. New Zealand Antarctic research programme

   reconnaissance and photography are used in the Ross Sea sector of Antarctica to determine where Adelie penguins ... world population. Some rookeries are photographed in all, or most, of the seasons to study the pattern ... repeating the photographic surveys of rookeries on Ross Island using helicopters in December and January to ... Abstract:  Since parameters of penguin populations may provide good indices of the abundance of ...

   Meeting Document : WG-CEMP-92/24 : Author(s): P.R. Wilson (New Zealand)

3. Gear loss reported by longline fishing vessels for the 2018 and 2019 fishing seasons

   . Vessels reported 1 632 km of line lost in the Convention Area, of which 27% were complete lines. There was ... no difference in the relative reporting of lost hooks by gear type, with rates of loss recorded at ... 0.3% for each gear type for the past two seasons. There was a significant difference in the frequency ... for Spanish or autoline. It is important to improve reporting in order to accurately quantify rates of ...

   Meeting Document : WG-FSA-2019/18 : Author(s): CCAMLR Secretariat

4. Mackerel icefish size and age at South Georgia and Shag Rocks

   and 2002. Most surveys were between December and February (summer), with one in September (Spring). Mean ... between localities. To compensate for variation in the time of surveys, the mean TL of age-classes were ... mean TL of age-classes 1, 2 and 3 were, respectively, 14.5, 23.8 and 30.2 cm at South Georgia, and 18.6 ... , 26.8 and 33.6 cm at Shag Rocks. The mean TL of each age-class of C. gunnari at Shag Rocks ...

   Meeting Document : WG-EMM-03/7 : Author(s): A.W. North (United Kingdom)

5. Spectra analysis of Drake Passage Oscillation Index (DPOI) from 1952 to 2003, Antarctica

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment ... , Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula, sea ice cover and chlorophyll-a in the ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ...

   Meeting Document : WG-EMM-04/46 : Author(s): M. Naganobu and K. Kutsuwada (Japan)

6. Predicting distribution and relative abundance of mid-trophic level organisms using oceanographic parameters and acoustic backscatter

   Abstract:  Data on the distribution and abundance of mid-trophic level organisms (MTLOs) in the ... predicted backscatter reasonably well in the Pacific sector of the SO, and in an independent dataset in the ... distribution of MTLOs in other parts of the SO. Author(s):  P.C. Escobar-Flores, R.L. O’Driscoll and J.C ... proxy for MTLO abundance in the epi- and mesopelagic zones. Boosted regression trees and generalised ...

   Meeting Document : WG-EMM-18/P07 : Author(s): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery

7. Density and biomass of Antarctic krill around South Shetland Islands using by 2-dB difference method

   krill (4.9 to 12.0 dB) and fish (-4.0 to-0.2 dB). The distributions and mean Sv of krill aggregations ... of the South Shetland Islands. The mean length/height ratio of krill aggregations in the west of the South ... (-4.0 to -0.2 dB). The distributions and mean Sv of krill aggregations in the Elephant Island ... Islands. The mean length/height ratio of krill aggregations in the west of the South Shetland Islands ...

   Meeting Document : SG-ASAM-17/04 : Author(s): S.-G. Choi, K. Lee and D. An

8. LENGTH-BASED ASSESSMENT FOR MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3

   accurate identification of age cohorts from the survey data. In this paper we describe a length‐based ... the survey data which, in conjunction with the bootstrapped survey biomass data, yields an estimate of ... ) in sub‐area 48.3 employs the CMIX and GYM packages, which derives population numbers‐at‐age and ... approach that removes the problem of cohort determination. A stratified bootstrap technique (consistent ...

   Meeting Document : WG-FSA-09/27 : Author(s): R.M. Hillary (Australia), C.T.T. Edwards, R.E. Mitchel and D.J. Agnew (United Kingdom)

9. Otolith elemental signatures reveal habitat shift of Electrona carlsbergi

   the biological data in 1990s, however, the habitat shift of this species was still unclear. The ... waters of sub-Antarctic zone and spend the first year of life in this region. Those individuals move ... to test habitat shift and life history processes of fish species in the Southern Ocean. Moreover ... which circumpolar distributed between the warm waters of the subtropical confluence zone and the ...

   Meeting Document : WG-FSA-17/65 : Author(s): L. Wei and G.P. Zhu

10. A representative system of CCAMLR MPAs: taking stock and moving forward

    Abstract:  The adoption of the Ross Sea MPA in 2016 marked "the end of the beginning" of ... establishing a representative system of MPAs in the Convention Area. This paper provides an overview of the ... progress made by CCAMLR toward establishing a representative system of MPAs in the Southern Ocean ... realises the potential of MPAs to enhance science and governance in Antarctica, including with respect to ...

    Meeting Document : CCAMLR-XXXVI/BG/25 Rev. 2 : Author(s): Submitted by ASOC

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